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<h1>navo/algorithm/hash/string/rs.h</h1>  </div>
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<a href="rs_8h.html">浏览该文件的文档。</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */</span>
<a name="l00011"></a>00011 <span class="preprocessor">#ifdef _MSC_VER</span>
<a name="l00012"></a>00012 <span class="preprocessor"></span><span class="preprocessor">#pragma once</span>
<a name="l00013"></a>00013 <span class="preprocessor"></span><span class="preprocessor">#endif </span><span class="comment">/* #ifdef _MSC_VER */</span>
<a name="l00014"></a>00014 
<a name="l00015"></a>00015 <span class="preprocessor">#ifndef __NV_RS__</span>
<a name="l00016"></a>00016 <span class="preprocessor"></span><span class="preprocessor">#define __NV_RS__</span>
<a name="l00017"></a>00017 <span class="preprocessor"></span>
<a name="l00018"></a>00018 <span class="preprocessor">#include &quot;<a class="code" href="cdef_8h.html" title="Definitions and declarations for common constants, types, variables.">../../../port/cdef.h</a>&quot;</span>
<a name="l00019"></a>00019 <span class="preprocessor">#include &quot;<a class="code" href="integer_8h.html" title="Provides standard integer types.">../../../port/integer.h</a>&quot;</span>
<a name="l00020"></a>00020 <span class="preprocessor">#include &quot;<a class="code" href="endian_8h.html" title="Definitions for byte order.">../../../port/endian.h</a>&quot;</span>
<a name="l00021"></a>00021 
<a name="l00022"></a>00022 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">&quot;C&quot;</span> {
<a name="l00024"></a>00024 <span class="preprocessor">#endif </span><span class="comment">/* #ifdef __cplusplus */</span>
<a name="l00025"></a>00025 
<a name="l00036"></a><a class="code" href="structrs__ctx.html">00036</a> <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00038"></a><a class="code" href="structrs__ctx.html#a11ecb029164e055f28f4123ce3748862">00038</a>     uint32_t <a class="code" href="structrs__ctx.html#a11ecb029164e055f28f4123ce3748862" title="哈希值">hash</a>;
<a name="l00040"></a><a class="code" href="structrs__ctx.html#ae275e74c4fd2e6820f2241c6724582bc">00040</a>     uint32_t <a class="code" href="structrs__ctx.html#ae275e74c4fd2e6820f2241c6724582bc" title="种子1">seed1</a>;
<a name="l00042"></a><a class="code" href="structrs__ctx.html#a04cf71aeded17fd79f732df04ba6d82b">00042</a>     uint32_t <a class="code" href="structrs__ctx.html#a04cf71aeded17fd79f732df04ba6d82b" title="种子2">seed2</a>;
<a name="l00043"></a>00043 }<a class="code" href="structrs__ctx.html" title="RS哈希上下文">rs_ctx</a>;
<a name="l00044"></a>00044 
<a name="l00045"></a>00045 <span class="preprocessor">#define RS_HASH_SEED1 0x0005C6B7UL</span>
<a name="l00046"></a>00046 <span class="preprocessor"></span><span class="preprocessor">#define RS_HASH_SEED2 0x0000FBC9UL</span>
<a name="l00047"></a>00047 <span class="preprocessor"></span>
<a name="l00052"></a><a class="code" href="group__RS.html#gaa48ccbaad68abc4d29c22683ccb567a7">00052</a> <span class="preprocessor">#define RS_CTX(name) rs_ctx name = {0, RS_HASH_SEED1, RS_HASH_SEED2}</span>
<a name="l00053"></a>00053 <span class="preprocessor"></span>
<a name="l00059"></a><a class="code" href="group__RS.html#ga9ff85378a6fb45fa8c00aced34fc2ea4">00059</a> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="group__RS.html#ga9ff85378a6fb45fa8c00aced34fc2ea4" title="初始化RS上下文">rs_init</a>(<a class="code" href="structrs__ctx.html" title="RS哈希上下文">rs_ctx</a>* ctx)
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061     ctx-&gt;<a class="code" href="structrs__ctx.html#a11ecb029164e055f28f4123ce3748862" title="哈希值">hash</a> = 0;
<a name="l00062"></a>00062     ctx-&gt;<a class="code" href="structrs__ctx.html#ae275e74c4fd2e6820f2241c6724582bc" title="种子1">seed1</a> = RS_HASH_SEED1;
<a name="l00063"></a>00063     ctx-&gt;<a class="code" href="structrs__ctx.html#a04cf71aeded17fd79f732df04ba6d82b" title="种子2">seed2</a> = RS_HASH_SEED2;
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065 
<a name="l00066"></a>00066 NV_API <span class="keywordtype">void</span> __rs_update(<a class="code" href="structrs__ctx.html" title="RS哈希上下文">rs_ctx</a>* ctx, <a class="code" href="group___xE6_x95_xB4_xE5_x9E_x8B_xE5_xAE_x9A_xE4_xB9_x89.html#gae1affc9ca37cfb624959c866a73f83c2" title="8比特无符号整型">uint8_t</a>* buf, <span class="keywordtype">size_t</span> cnt);
<a name="l00067"></a>00067 
<a name="l00089"></a><a class="code" href="group__RS.html#gaf00ea4cc7b2f96b59903a351e139c21a">00089</a> <span class="preprocessor">#define rs_update(ctx, buf, cnt) __rs_update(ctx, (uint8_t*)(buf), cnt)</span>
<a name="l00090"></a>00090 <span class="preprocessor"></span>
<a name="l00091"></a>00091 <span class="keyword">static</span> <span class="keyword">inline</span> uint32_t __rs_final(<a class="code" href="structrs__ctx.html" title="RS哈希上下文">rs_ctx</a>* ctx, uint32_t hash)
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093     ctx-&gt;<a class="code" href="structrs__ctx.html#a11ecb029164e055f28f4123ce3748862" title="哈希值">hash</a> = 0;
<a name="l00094"></a>00094     <span class="keywordflow">return</span> __cpu_to_le32(hash);
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 
<a name="l00104"></a><a class="code" href="group__RS.html#ga142a0cc6356f511d8e35185134b0b055">00104</a> <span class="keyword">static</span> <span class="keyword">inline</span> uint32_t <a class="code" href="group__RS.html#ga142a0cc6356f511d8e35185134b0b055" title="获取RS校验值">rs_final</a>(<a class="code" href="structrs__ctx.html" title="RS哈希上下文">rs_ctx</a>* ctx)
<a name="l00105"></a>00105 {
<a name="l00106"></a>00106     <span class="keywordflow">return</span> __rs_final(ctx, ctx-&gt;<a class="code" href="structrs__ctx.html#a11ecb029164e055f28f4123ce3748862" title="哈希值">hash</a>);
<a name="l00107"></a>00107 }
<a name="l00108"></a>00108 
<a name="l00115"></a>00115 NV_API uint32_t <a class="code" href="group__RS.html#ga45e7e3172ec6edbd1a78c9b77a9dcd52" title="直接哈希字符串">rs_hash_nbstr</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* str);
<a name="l00116"></a>00116 
<a name="l00119"></a>00119 <span class="preprocessor">#ifdef __cplusplus</span>
<a name="l00120"></a>00120 <span class="preprocessor"></span>}
<a name="l00121"></a>00121 <span class="preprocessor">#endif </span><span class="comment">/* #ifdef __cplusplus */</span>
<a name="l00122"></a>00122 
<a name="l00123"></a>00123 <span class="preprocessor">#endif </span><span class="comment">/* #ifndef __NV_RS__ */</span>
<a name="l00124"></a>00124 
</pre></div></div>
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